Finding the Fourth Proportional to 2,121.27, 3,178.83 and 1,506.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,121.27 : 3,178.83 = 1,506.18 : x
2. Step 2: Convert to fraction form
   2,121.27/3,178.83 = 1,506.18/x
3. Step 3: Cross multiply
   2,121.27x = 3,178.83 × 1,506.18
4. Step 4: Simplify right side
   2,121.27x = 4,787,890.17
5. Step 5: Solve for x
   x = 4,787,890.17/2,121.27
6. Step 6: Final answer
   x = 2,257.09